Gas range cock



Oct. 18, 1932. P. s. HARPER 4 GAS RANGE COCK Filed oct. 5, 1929 amm10 wm. Nb mb @367.16515 MMV,

Patented Oct. 18, 1932 PATENT OFFICE PHILIP S. HARPER, OF CHICAG, ILLINOIS GAS RANGE COCK 4 Application led )ctober 3, 1929. Serial No. 396,952.`

This invention consists of an improved type of gas range cock having on at least oneI of its nozzles a hood with a side port in addition to the regular central port, such combination giving a cock with a greater `range of adjustment than the regular and usual construction.

In this invention I lhave shown for convenience the improved cock nozzle which is the subject of this invention, in connection with my improved double burner as disclosed in my copending application No. 267,223, filed April 4, 1928, which has resulted in Patent No. 1,836,242, issued December 15, 1931. In a. small gas burner, such as a simmer burner, as at 'present made and commonly used, with a cast iron one-piece burner head having a cored mixing tube, I have found that with a hood orifice suiiiciently large to provide a sufiicient quantity of manufactured gas it is not possible with any adjustable gas cock nozzle now in use to make an adjustment that will give proper air injection for this type of burner on natural gas. Nozzles at present in use are either of the type having a pointed needle which closes more or less the hole in the hood as the hood is screwed toward or away from said fneedle, all as shown in this application; or said nozzles have a central auxiliary orifice in the end of the needle member, as shown in my Patent No. 1,589,386 of June 22, 1926. In the application herein, I haveplaced the auxiliary orifice in the hood itself, to one side of the central orifice which is closeable and adjustable by means of the needle. In this new arrangement herein disclosed I procure, as experimentally determined, very much superior results, due I believe to the fact that the stream from the side orifice in no way interferes with the jet action of the needle point orifice.

The obj ect of this invention is to provide a gas cock having a greater range of adjustment, and that will therefore better serve in the extreme adjustments necessary for a very rich gas similar to natural gas and at the same time a very lean gas similar to water Gas.

D Another object of this invention is to provide a cock which will serve for a very small or so-called simmer burner, and provide the foregoing extreme adjustments necessary.

Another object of this invention is to provide a double burner with a single proportional air 'shutter as disclosed in my Patent No. 1,664,509, of April 3, 1928, and to provide therewith a gas cock giving improved equalization of the fiame characteristic in the two burner sections, with the various adjustments necessary for the different gases in domestic use.

Another object of this invention is 't'o provide a double burner, or a combination large burner and simmer burner, which will serve* withoutchange of nozzle orifices for either manufactured or natural gas.

These and other objects of my invention will be more apparent from the following de- 7 scription and drawing, in which- 0 Figure 1 is sectional elevation of a gas cock and burner of the type of this invention;

Figure 2 is a cross section of the cock on line` 2 2 of Figure 1; Figure 3 is a cross section through the cen terdof the cock on the line 3-3 of Figure 1; an i Figure 4 is an enlarged view of the upper nozzle hood and needle member and a portion of the gas cock body. 8

Referring now to. the drawing, a manifold pipe 10 is shown, into which is screwed one end of the gas cock body 11, sai-d end havf inga passage 12 therein which terminates at the plug opening 13 in the gas cock body 11 and into whicha tapered plug 14 is fitted, the said plug surface and the bearing surface of the body member 11 being ground to form an accurate fitting joint as in the usual gas cock. The plug 14 has a transversely extending passage 15 therein which is larger at oneside of the plug than at the other. A vertical extension 16 and a horizontal extensionor nozzle end 18 are provided integral with the body member through which an L- shaped passage 17 extends', the outer end of whichis enlarged for accommodation of the nozzle needle 19. Said needle is slabbed longitudinally so that gas may pass from passage 17 on each side of said needle, said needle being a press fit in the passage '17, or being otherwise fastened therein in a fixed position. The passage 15 through the plug 14 is the same size as the passage 17 adjacent said passage, and is the same size as the passage 12 vadjacent the end of this passage. On the threaded nozzle end 18 there isscrewed cap 21 having in its outer end a centrally placed orifice '22. This'needle 19 in combination with the nozzle cap 21 forms an adjustable nozzle, and the cap 21 is screwed more -or less onto the threads of the nozzle end 18 causing the needle to enter the orifice 22 as conditions require, so as to throttlel this ori- Returning now to the passage 15 in the plug, a passage .23 leads oif therefrom and out of the bottom of the plug and into a passage 26 in a nozzle end 27 having a needle 28 and a nozzle cap 29 with an orifice 30, all of the same construction as the beforementioned needle 19, cap 21 and orifice 22, eX- cept that said nozzle cap 29 has an additional small orifice 64 drilled therein as shown. A stopper plug 31, screwed, pressed or otherwise securely fastened, serves to effectively close the outer end of passage 17.

The upper end of the plug 14 has an eX- tension 40 which extends through a coil spring 42, and a nut 43 which is screwed onto the body 11 at 44, the spring 42 in this assembly being compressed by the nut 43 against the shoulder- 45 on the plug 14, thus serving to hold said plug firmly seated on the bearing surface 13. 'A stop pin 46 is pressed into said plug as shown in Figures 1 and 2, said pin operating against a projection 47 of the body 11,'said projection determining and limiting thel number of degrees of possible rotation of said plug 14.

The extension 40 has fastened on the outer end a T handle 486 by means of the stove bolt 49, said handle being slabbed and litting into a depression in the handle (not shown) in order to prevent relative rotation of the two parts. j

Referring now to Figure 3, a side passage 50 is drilled into the bearing surface of the plug 14 so as to make connection to passage.

15, for purposes disclosed in my co-pending application Serial No' 267 ,223, iiled April 4, 1928, which has resulted in Patent No. 1,836,242, issued December 15, 1931.

j The nozzle caps 21 and 29 project through an outer shutter 51 and an inner shutter 52, said shutters being fastened to the mixer face 53 by the clamping screw 54. Nozzle cap 21 projects into a mixing tube 55 and said mixing tube has side passages 56 leadingetherefrom into the outer burner section 57 which is of the usual star shape or any other shape desired and has burner ports 58 in the top surface thereof after the manner of the usual construction of gas range burners. The upper nozzle 29 projects into upper-mixing tube 59 which in turn leads directly to the boiling burner -section 60 which has burner ports 61 in the top thereof. These ports 61 are spaced in a circle or otherwise conveniently arranged to provide a small boiling burner or so-called simmer burner. The air shutter portsl are arranged so that by rotation of the outer shutter 51 the air supply to both burner sections is adjusted-in properproportion to the gas burned by each.

A'shield 62 is provided having a hole 63 therein through which the extension 40 projects," and said shield has indicating dials thereon (not shown),

er pressures, the orifice 30 may be required to be nearly closed, at suchposition the injecting power of the gas streamfrom this orifice becoming low and somewhat unreliable dueto inaccuracy in exact centering of the parts and very small burrs and irregularities of the surfaces which cannot be avoided in making such parts on a production basis. However, in the fully closed or nearly vclosed position when orifice 30 has low `injecting power, a straight stream of gas issues from the side orice 64, so that goodv injection of air to the burner is-actually obtained. It might appear that the construction with the auxiliary orifice in the needle.

as shown in my Patent No. 1,589,386, would serve the purpose equally well, however, eX- periment vproves without a doubt that said former construction cannot be made in practical production to give as eiiicient performance as in the invention herein disclosed.

While I have described more or less presuggest or render expedient Without departing from the spirit or scope of my invention.

I claim: n A gas burner, comprising a valve having a casing with a valve closing member seating therein, said casing having two discharge nozzles thereon, said burner having two sec-v tions, one larger than the other, and having two mixing tubes, 'one connecting with each section, each of said nozzles projecting into one of said mixing tubes, said valve closing member having an inlet passage and two outlet passages, each of said outlet passages leading to one of said nozzles, said passages being arranged whereby in at least one rotary position of said closing member said inlet passage is closed while both outlet passages are open 'to said nozzles, the one of: said nozzles projecting into the mixing tube leading to the smaller of said sections having a central orifice projecting into said mixing tube, a needle designed to close said central orifice, and having a single side orifice projecting into said mixing tube.

Signed at Chicago, Illinois, this 30th day oi September, 1929.

PHILIP S. HARPER. 

